Blasting-fuse.



N0.`S45,81-9.l Paenteu iar. 2G, J. A. FUSZNER.

BLASTING FUSE.

(Application filed Oct. 30, 1899.)

(No Model.)

tector in place.

UNITED STATES FFICE@ ATENT BLASTlNG-FUSE.

SPECIFICATION forming part of Letters Patent No. 645,849, dated March 20, 1900."V

Application filed October 30, 1899. Serial No. 735,302. (No model.)

To all whom, it may concern.-

Be it known that I, JoHNA. FUSZNER, a citizen of the United States, residing at Manchester, in the county of St". Louis and State of Missouri, have invented a new and useful Blasting-Fuse, of which the following is a specification.

This invention relates to fuses in general, and more particularly to that class employed for blasting purposes; and it has for its object particularly to provide a fuse which may be employed with safety in deep blasting, due to the fact that it may be readily regulated as to the time of ignition of a shot.

A further object of the invention is to provide means for protecting the susceptible portions of the fuse against moisture due to splashing, &c.

" VIn the drawings forming a portion of this invention, and in which similar numerals of reference designate like and corresponding parts in-the several views, Figure l is a side elevation showing ythe fuse having its prol Fig. 2 is a central vertical section of Fig. l,.the fuse proper being shown in elevation to illustrate the connection of the sections thereof. Fig. 3 isa perspective view showing the complete fuse with `the protector removed.

Referring now to the drawings,in construct.- ing a fuse in accordance with this invention A it is made of two sections 5 and 6, of which f may be desired, care being taken to prevent spilling of the powder. Between the bifurcations of the waterproof fuse thus formed the undisturbed. end of .the cotton fuse isinserted, after which the parts of this bifurcated end are squeezed and compressed to iirmly engage with the cotton fuse. A substantially-conical metallic casing 7 is then formed, and which casing has its enlarged end crimped inwardly to contract it, as shown at 8, and through this contracted end and into the casing are passed the connected sections of the fuse, the untwisted portion of the cotton fuse passing outwardly through the opposite end of the casing. This portion 8 is then further crimped to forni a tighter seal between the engaging surfaces, and the opposite end of the casing is crimped, as shown at 9, to contract it upon the cotton section below the place of joinder of thetwo sections of the fuse. When the parts have been thus assembled, they arel ready for use under ordinary circumstances, the waterproof section of the fuse being inserted in the hole containing the shot and the protruding portion of the cotton section being ignited at the proper time. In order to vary the length of time consumed by the cotton wick in burning, thc strands thereof are twisted or plaited in the form of a rope, the twisted portion or plaited portion consuming a longer time in burning than the unplaited or untwisted portion. Thus by plaiting or twisting a short part 0f the wick the blast may be made at a short time after the wick is ignited, and by twisting or plaiting a longer portion a longer time will intervene between the ignition and the blast.

Vhen this fuse is used in damp localities where it is liable to be splashed with mud or water, there is employed a protecting-casing l0, which is cylindrical in form and has an open upper end, while the bottom is closed, except for a central perforation ll, through which the cotton fuse and the adjacent ends ot' the casing 7 are passed inwardly until the `crimped portion 9 engages with the walls of the perforation ll. rlhe waterproof fuse is then put in place and the cotton fuse is -ignited and is protected by the cylindrical IOO 2' l' ceases into the'perforation 1l and will then 'expand to form a yieldable lock between the casing 7 and lthe protector 10. I 1 What is claimed is- 5 1. In a time-fusre, the combination With'a waterproof section having one end split, ot' a second fuse-section disposed with one end in the sp1it,of the first section, said second section including a plurality of strands adapted xo to be twisted and untwisted, and a casingiuclosing the connected portions ofk'the fusesections and tightly encircling the second section to prevent untwisting thereof within the casing.

x 5 2. In a time-tie, the combination with a -e Awaterproof fuse having one end split, of a cotton fuse-section having one end disposed in the split of the Waterproof section, said cotton fuse-section comprising a plurality of strands adapted to be twisted to form a rope zoand to be untwisted, said cotton fuse-section being twisted at its connected end, and-a casing inclosing the connected portions of the fuse-sections, said casing tightly encirciing the cotton fuse-section to prevent nntwisting 25 thereowithin the casing.

In testimony that I claim the foreging as myown I have hereto affixed my signature ini the presence of two Witnesses.

JOHN A. EUSZNER.

Witnesses:

GEO. A. FUSZNER, FRANK X. FUSZNER. 

